EP0050840B1 - Procédé pour l'ajustage de régulateurs compound pour brûleurs dans une installation de production de chaleur - Google Patents

Procédé pour l'ajustage de régulateurs compound pour brûleurs dans une installation de production de chaleur Download PDF

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Publication number
EP0050840B1
EP0050840B1 EP81108690A EP81108690A EP0050840B1 EP 0050840 B1 EP0050840 B1 EP 0050840B1 EP 81108690 A EP81108690 A EP 81108690A EP 81108690 A EP81108690 A EP 81108690A EP 0050840 B1 EP0050840 B1 EP 0050840B1
Authority
EP
European Patent Office
Prior art keywords
air
fuel
microprocessor
exhaust gas
values
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81108690A
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German (de)
English (en)
Other versions
EP0050840A1 (fr
Inventor
Karl Dungs
Gerd Mattes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Karl Dungs GmbH and Co KG
Original Assignee
Karl Dungs GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Karl Dungs GmbH and Co KG filed Critical Karl Dungs GmbH and Co KG
Publication of EP0050840A1 publication Critical patent/EP0050840A1/fr
Application granted granted Critical
Publication of EP0050840B1 publication Critical patent/EP0050840B1/fr
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
    • F23N5/006—Systems for controlling combustion using detectors sensitive to combustion gas properties the detector being sensitive to oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/04—Memory
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2223/00—Signal processing; Details thereof
    • F23N2223/08—Microprocessor; Microcomputer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2227/00—Ignition or checking
    • F23N2227/20—Calibrating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/06—Air or combustion gas valves or dampers at the air intake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/10—Air or combustion gas valves or dampers power assisted, e.g. using electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/16—Fuel valves variable flow or proportional valves

Definitions

  • the invention relates to a method for setting compound controllers for burners in heat generating systems, which can be set in stages to different heating outputs and fuel throughputs depending on the heat requirement, with an air control valve (air flap) for the combustion air and a fuel control valve, which can be set by actuators, in particular servomotors , which receive their control commands from a microprocessor, which generates the control commands depending on the current heat demand, the operating signals of an automatic burner control unit and stored air: fuel value pairs.
  • air flap air flap
  • fuel control valve which can be set by actuators, in particular servomotors , which receive their control commands from a microprocessor, which generates the control commands depending on the current heat demand, the operating signals of an automatic burner control unit and stored air: fuel value pairs.
  • the actuators were formed by a lever mechanism which adjusted the air flap and the fuel control valve. Since the ratio of the valve positions changes non-linearly with the heat requirement, the two actuators were linked with each other via a cam.
  • the cam disks were rotated depending on the heat requirement and the contour of the cam disk determined the ratio of air volume: fuel quantity.
  • the cams could not be identical from system to system because system-specific features required a special setting in each operating point.
  • the cams were adjustable; a steel band was placed over the cam disc, which was adjustable point by point by means of screws screwed radially into the cam disc.
  • the object of the present invention is to provide a method with which a compound controller for burners in heat-generating systems, which is controlled by a microprocessor, can be quickly and reliably adjusted to the respective system.
  • this object is achieved in a method of the type mentioned at the outset by replacing the microprocessor with a mobile computer for determining and storing the air: fuel value pairs during the initial start-up or an inspection, which passes through the burner's work area under program control
  • the exhaust gas condition is recorded at each operating point by means of a probe and the air: fuel ratio is brought to the setpoint by means of NaCll put, whereupon the air: fuel value pairs set in this way are determined and written into a memory.
  • the pulses of the control commands that are delivered to the servomotors could be counted and summed.
  • this method is relatively uncertain, which is why, according to a preferred embodiment of the invention, the position feedback signals from the air flap or fuel control valve are used to determine the value pairs.
  • a 0 2 probe preferably uses a 0 2 probe; equally or additionally, however, a CO 2 and / or a CO probe can also be used.
  • the pairs of values determined by the computer could, for example, be printed out and transferred manually into the main memory of the operating microprocessor.
  • fuel value pairs into the working memory of the operating microprocessor a programming device controlled by the computer, to which the working memory of the operating microprocessor is connected. This enables rapid and reliable transmission.
  • the computer also determines and enters an error code which allows the operating microprocessor to check for correctness when querying the values from the main memory.
  • a program-controlled computer which takes the place of the microprocessor to set the compound controller and which runs through a complete cycle of the system, the exhaust gas values being determined at each operating point and the computer depending on the determined exhaust gas values a pair of values determined for the actuators.
  • the actuators are adjusted in accordance with this determined pair of values or a determined correction value and it is then determined again by means of the exhaust gas measurement whether the desired exhaust gas composition has been reached.
  • the correction motors are again determined and readjusted, which is automatically carried out by the computer until the desired exhaust gas state is reached, whereupon the actual position values of the servomotors are queried and stored; at the same time the error detection code is automatically determined by the computer and stored together with the pair of values.
  • the computer is replaced again by the operating microprocessor, which now queries the corrected value pairs from the working memory in accordance with the heat demand requirements and controls the actuators accordingly.
  • the ready-to-operate system of a compound controller shown in FIG. 1 comprises as a central element a microprocessor 1 to which program memories 2 and 3 are connected with the interposition of a comparator 4 and a gate circuit 5.
  • the comparator 4 the values retrieved from the program memory are compared and, if they match, are passed on to the microprocessor 1 via the gate circuit 5. If the data do not match, then the gate circuit 5 is closed by the comparator 4 and triggers an interrupt. This avoids error controls.
  • an analog-digital converter 6 is also connected to the microprocessor 1, which converts the analog heat demand message or heat output request into a digital signal suitable for the microprocessor 1.
  • a known automatic burner control 7 is connected to the microprocessor 1, which in turn is connected to a safety valve, a flame monitor and the like.
  • a working memory 8 is also connected to the microprocessor 1, which contains air: fuel value pairs and an error code assigned to each value pair.
  • the microprocessor 1 queries a pair of values from the working memory and uses this to generate a control command which it delivers to a connected converter 9 or 10, which in turn each has a servomotor 11 or 12 control which controls an air flap 13 in an air supply line 14 or a fuel control valve 15 in a fuel supply line 16.
  • the position of the air flap 13 or the fuel control valve 15 that has actually been reached is reported back to the command converter 9 or 10 via lines 17 and 18, which in turn supplies a corresponding feedback signal to the microprocessor 1.
  • a 0 2 probe can also be provided, the output signal of which is fed to the microprocessor 1 via an analog-digital converter 19, which then makes a corresponding slight allowable adjustment of the air flap 13 or the fuel control valve 15.
  • the microprocessor 1 which controls the normal operation of the system, is replaced by a computer 20 with a connected program memory 21.
  • the analog-to-digital converters 6 and 19, the burner control unit 7 and the command converters 9 and 10 are connected to the computer 20 in an unchanged manner compared to the microprocessor 1.
  • an exhaust gas measuring device 22 is also connected to the computer 20, which converts signals from an exhaust gas probe 23 into signal forms suitable for the computer 20.
  • the exhaust gas probe 23 is used in an exhaust gas duct 24.
  • the entire operating range is now traversed by corresponding input into the analog-digital converter 6, with the computer following the servomotors 11 and 12 at each working point, depending on the values obtained from the exhaust gas measuring device 22, until the exhaust gas probe 23 detects it reports the desired state of the exhaust gas.
  • the signals present on the lines 17 and 18 at this point in time are recorded and stored.
  • the procedure is generally such that the air flap 13 and the fuel control valve are not readjusted, but the fuel control valve 15 is adjusted to a corresponding throughput in accordance with the operating point or heat requirement and the air flap 13 is adjusted to set the desired exhaust gas composition.
  • the reverse procedure can also be followed, namely that the air flap is adjusted and the fuel control valve is moved.
  • a commercially available programming device 25 is connected to the computer 20 according to FIG. 3, which inputs the new values into the working memory 8 designed as a RePROM.
  • the computer 20 determines an additional code signal for each pair of air: fuel values and enters it in the working memory 8. Using this code word, the microprocessor 1 can determine when the system is operating whether the air: fuel value pairs retrieved from the working memory 8 are faulty.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulation And Control Of Combustion (AREA)

Claims (5)

1. Procédé pour le réglage du régulateurs com- pounds pour brûleurs dans des installations de production de chaleur que peuvent se régler, par échelons, sur des rendements thermiques et des débits de combustible chaque fois différents selon le besoin de chaleur, comportant un clapet de réglage d'air (registre d'air) pour l'air de combustion et un robinet de réglage du combustible, l'un et l'autre étant réglables au moyen d'éléments de positionnement, en particulier de moteurs de positionnement qui reçoivent leurs ordres d'un microprocesseur qui produit ces ordres en fonction de la demande thermique instantanée, en fonction des signaux d'exploitation d'un dispositif automatique de chauffe et en fonction des couples de valeurs mémorisées air/ combustible, caractérisé en ce que, pour saisir et mémoriser les couples de valeurs air/combustible lors de la première mise en service ou lors d'une inspection de l'installation, on remplace le microprocesseur (1) par un calculateur (20) qui, commandé par le programme, parcourt la plage de travail du brûleur, saisit en chaque point de travail, à l'aide d'une sonde (23), la composition des fumées et, par reprise du réglage du rapport air/combustible, amène la composition des fumées à sa valeur de consigne, sur quoi les couples de valeurs air/combustible ainsi introduites dans le réglage sont saisies et mémorisées dans une mémoire (8).
2. Procédé selon la revendication 1, caractérisé ce que pour saisir les couples de valeurs on utilise les signaux d'annonce en retour des positions (17 et 18) du registre d'air (13) et du robinet de réglage du combustible (15).
3. Procédé selon la revendication 1 ou la revendication 2, caractérisé en ce que l'on saisit la composition des fumées à l'aide d'une sonde à oxygène et/ou d'une sonde à C02 et/ou d'une sonde à CO (23).
4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que pour obtenir les couples de valeurs on amène au calculateur mobile (20) les valeurs saisies concernant les fumées et en ce que, à partir de ces valeurs, le calculateur établit les ordres de correction concernant les moteurs de positionnement (11 et 12) pour le réglage du registre d'air (13) et du robinet de réglage de combustible (15) et les leur transmet.
5. Procédé selon l'une des revendications précédentes, caractérisé en ce que pour introduire en mémoire de travail (8) du microprocesseur (20) les couples de valeurs air/combustible obtenus on utilise une unité de programmation (25) asservie au calculateur (20) et à laquelle se raccorde la mémoire de travail (8) du microprocesseur (20).
EP81108690A 1980-10-23 1981-10-22 Procédé pour l'ajustage de régulateurs compound pour brûleurs dans une installation de production de chaleur Expired EP0050840B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3039994 1980-10-23
DE19803039994 DE3039994A1 (de) 1980-10-23 1980-10-23 Verfahren zur einstellung von verbundreglern fuer brenner in waermeerzeugungsanlagen

Publications (2)

Publication Number Publication Date
EP0050840A1 EP0050840A1 (fr) 1982-05-05
EP0050840B1 true EP0050840B1 (fr) 1984-08-08

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EP81108690A Expired EP0050840B1 (fr) 1980-10-23 1981-10-22 Procédé pour l'ajustage de régulateurs compound pour brûleurs dans une installation de production de chaleur

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EP (1) EP0050840B1 (fr)
DE (1) DE3039994A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
DE4342991A1 (de) * 1993-12-16 1995-06-22 Bosch Gmbh Robert Verfahren zum Überwachen wenigstens einer sicherheitsrelevanten Funktion eines Gerätes

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DE3208765A1 (de) * 1982-03-11 1983-09-22 Ruhrgas Ag, 4300 Essen Verfahren zur ueberwachung von feuerungsanlagen
US4486166A (en) * 1982-08-12 1984-12-04 Westinghouse Electric Corp. Jackshaft controlled boiler combustion control system
EP0121437A3 (fr) * 1983-03-31 1985-01-23 Monarflex Limited Système de contrôle pour une chaudière ou un four
GB2138610B (en) * 1983-04-21 1986-10-29 Autoflame Eng Ltd Fuel burner control systems
US4645450A (en) * 1984-08-29 1987-02-24 Control Techtronics, Inc. System and process for controlling the flow of air and fuel to a burner
DE3441376C1 (de) * 1984-11-13 1986-03-13 Programmelectronic Engineering AG, Dornach Verfahren zur apparativen Diagnose des Betriebszustandes einer Feuerungsanlage sowie Geraet hierzu
GB8429292D0 (en) * 1984-11-20 1984-12-27 Autoflame Eng Ltd Fuel burner controller
DE3443533A1 (de) * 1984-11-29 1986-06-05 Karl Dungs Gmbh & Co, 7067 Urbach Gasfeuerungsanlage mit einem gas/luft-verbundregler
FI850427L (fi) * 1985-02-01 1986-08-02 Saastamoinen Oy Styrningsmetod foer pannanlaeggning som fungerar med fast braensle och motsvarande styranlaeggning.
DE3526384A1 (de) * 1985-07-24 1987-02-12 Bieler & Lang Gmbh Verfahren und anordnung zur feinregulierung des brennstoffmengenstromes an brennerbetriebenen feuerungsanlagen durch messung des restsauerstoffes und des kohlenmonoxidgehaltes in den abgasen
CH668825A5 (de) * 1986-01-28 1989-01-31 Landis & Gyr Ag Verfahren und vorrichtung zur gas-luft-mengenregelung fuer gasgeblaesebrenner.
US4927350A (en) * 1987-04-27 1990-05-22 United Technologies Corporation Combustion control
DE3890337T1 (de) * 1987-04-27 1989-06-15 United Technologies Corp Verbrennungssteuerung
DE4316139A1 (de) * 1992-05-16 1993-11-18 Gold Star Co Vorrichtung und Verfahren zur Verbrennungsregelung
DE59305632D1 (de) * 1993-03-05 1997-04-10 Landis & Gyr Tech Innovat Feuerungsautomat
DE4428953C2 (de) * 1994-08-16 1999-06-24 Lamtec Mes Und Regeltechnik Fu Verfahren zur Regelung und Überwachung der Verbrennung einer Feuerungsanlage
DE19749506C1 (de) 1997-11-08 1999-01-07 Hartmuth Dipl Phys Dambier Verfahren zur laufenden Optimierung der Luftzufuhr bei Feuerungsanlagen
US6213758B1 (en) 1999-11-09 2001-04-10 Megtec Systems, Inc. Burner air/fuel ratio regulation method and apparatus
NL1015797C2 (nl) * 2000-07-25 2002-01-28 Nefit Buderus B V Verbrandingsinrichting en werkwijze voor het besturen van een verbrandingsinrichting.
DE10116133B4 (de) 2000-09-06 2004-10-14 Dambier, Hartmuth, Dipl.-Phys. Verfahren zur Bestimmung und Verifizierung der CO-Einsatzpunkte bei Feuerungsanlagen mit mehreren Brennern
DE10111077C2 (de) * 2001-03-08 2003-11-06 Bosch Gmbh Robert Verfahren zum Regeln eines Brenners eines Gasverbrennungsgeräts
GB2484957A (en) * 2010-10-28 2012-05-02 Autoflame Eng Ltd Burner control with stored values for valve settings and pressures
DE102014204786A1 (de) * 2014-03-14 2015-09-17 Robert Bosch Gmbh Steuergerät, Brenner sowie Verfahren zum Betrieb solch eines Steuergeräts
ES2963966T3 (es) * 2014-07-10 2024-04-03 Riello Spa Método para modificar una caldera de gas combustible

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NL7613622A (nl) * 1976-12-08 1978-06-12 Nederlandse Gasunie Nv Inrichting voor het bepalen van het rendement van een stookapparaat.
FI772751A (fi) * 1976-12-14 1978-06-15 Measurex Corp Foerfarande och anordning foer att kontrollera effektiviteten av foerbraenningen i en ugn
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Cited By (1)

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Publication number Priority date Publication date Assignee Title
DE4342991A1 (de) * 1993-12-16 1995-06-22 Bosch Gmbh Robert Verfahren zum Überwachen wenigstens einer sicherheitsrelevanten Funktion eines Gerätes

Also Published As

Publication number Publication date
DE3039994A1 (de) 1982-05-06
DE3039994C2 (fr) 1987-05-27
EP0050840A1 (fr) 1982-05-05

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